"Anthropogenic global warming trends might have been overestimated by a factor of two in the second half of the 20th century." PNAS, Dec. 2012

Dec. 26, 2012, "Using data to attribute episodes of warming and cooling in instrumental records," PNAS.org, Ka-Kit Tung¹ and Jiansong Zhou

"The anthropogenic global warming trends might have been overestimated by a factor of two in the second half of the 20th century."...via Tom Nelson



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